{"id":11,"date":"2026-05-08T23:11:27","date_gmt":"2026-05-08T20:11:27","guid":{"rendered":"http:\/\/closethehooks.com\/?page_id=11"},"modified":"2026-05-08T23:11:27","modified_gmt":"2026-05-08T20:11:27","slug":"the-calculator","status":"publish","type":"page","link":"https:\/\/closethehooks.com\/?page_id=11","title":{"rendered":"The Calculator"},"content":{"rendered":"\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-c595020f6a3e33530f414a712afad975\"><strong>Lifting Work Calculator Application<\/strong><\/h3>\n\n\n\n<p>The &#8221;Close the Hooks&#8221; application is designed to support practical worksite operations, especially when lifting tasks require precise planning and mathematical justification. The application helps users calculate:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Inclination angles and sling tension forces<\/strong> calculated precisely based on lifting angles and pick point locations.<\/li>\n\n\n\n<li><strong>Load utilization ratio<\/strong> for any type of sling, regardless of whether chains, straps, or other lifting gear are used.<\/li>\n\n\n\n<li><strong>Symmetrical and asymmetrical lifts<\/strong> \u2013 even in cases where differences in lifting loop heights or asymmetrical pick points create complex situations.<\/li>\n\n\n\n<li><strong>Balancing and center of gravity<\/strong>, such as using a turning pulley or safely lifting tilted elements.<\/li>\n\n\n\n<li><strong>Shortening requirements for asymmetrical elements<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>The purpose of the application is not only to save time, but also to raise the level of safety on construction sites. It highlights the same calculation methods covered in the <em>Close the Hooks<\/em> book and makes them easy to apply in everyday work.<\/p>\n\n\n\n<p><strong>The application runs in a web browser<\/strong> and requires no installation. It is specifically designed for lifting planners, tower crane operators, signalers, and anyone who wants to move lifting operations away from guesswork and routine \u2014 toward measurable and justifiable safety.<\/p>\n\n\n\n<h2 style=\"color: white;\">The Calculator<\/h2>\n<p>\nBy using this calculator, you agree to the following terms of use. Please read them carefully before proceeding.\n<\/p>\n\n<div style=\"margin-top: 1em;\">\n  <button id=\"openCalcBtn\" class=\"ck-btn\">Open the calculator<\/button>\n<\/div>\n\n<style>\n  .ck-btn {\n    background-color: #007bff;\n    color: white;\n    font-size: 18px;\n    padding: 12px 24px;\n    border: none;\n    border-radius: 6px;\n    cursor: pointer;\n    transition: background-color 0.3s ease;\n  }\n  .ck-btn:hover {\n    background-color: #0056b3; \/* Tummempi s\u00e4vy hover-efekti\u00e4 varten *\/\n  }\n<\/style>\n\n<script>\n(function(){\n  \/\/ ASETUS: Laskimen suora URL\n  const CALC_URL = \"https:\/\/laskin.koukutkiinni.fi?lang=en\";\n\n  \/\/ Hae nappi\n  const btn = document.getElementById('openCalcBtn');\n\n  \/\/ Lis\u00e4\u00e4 suora toiminto: avaa laskuri uuteen ikkunaan, kun nappia klikataan\n  btn.addEventListener('click', function() {\n    window.open(CALC_URL, '_blank', 'noopener,noreferrer');\n  });\n})();\n<\/script>\n\n\n<p><strong>Want to understand the theory behind the calculator\u2019s results?<\/strong><br>\nThe calculator gives you the correct numbers, but if you want to fully understand the mathematics behind lifting angles, sling forces, asymmetrical lifts, load utilization ratios, and balancing, the book explains every model and formula step by step.<\/p>\n\n<p><a href=\"https:\/\/closethehooks.com\/\" class=\"button kadence-button\">Read more about the book<\/a><\/p>\n\n<!-- Support section -->\n<div style=\"margin-top: 3em; padding-top: 2em; border-top: 1px solid #333;\">\n\n  <p style=\"font-size: 16px;\">\n    <strong>Want to support my work?<\/strong><br>\n    This calculator is free to use. If you find it useful and want to support its ongoing development, you can do so here:\n  <\/p>\n\n  <a href=\"https:\/\/buymeacoffee.com\/mikko_tee\" target=\"_blank\" rel=\"noopener noreferrer\">\n    <button class=\"bmac-btn\">Buy me a coffee<\/button>\n  <\/a>\n\n<\/div>\n\n<style>\n  .bmac-btn {\n    margin-top: 12px;\n    background-color: #ffdd00; \/* Buy Me a Coffee -henkinen, mutta hillitty *\/\n    color: #000;\n    font-size: 16px;\n    padding: 10px 20px;\n    border: none;\n    border-radius: 6px;\n    cursor: pointer;\n    transition: background-color 0.3s ease;\n  }\n\n  .bmac-btn:hover {\n    background-color: #e6c800;\n  }\n<\/style>\n","protected":false},"excerpt":{"rendered":"<p>Lifting Work Calculator Application The &#8221;Close the Hooks&#8221; application is designed to support practical worksite operations, especially when lifting tasks [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-11","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/pages\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/closethehooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11"}],"version-history":[{"count":1,"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/pages\/11\/revisions"}],"predecessor-version":[{"id":12,"href":"https:\/\/closethehooks.com\/index.php?rest_route=\/wp\/v2\/pages\/11\/revisions\/12"}],"wp:attachment":[{"href":"https:\/\/closethehooks.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}